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Split output of command by columns using Bash?
...d> | while read a b; do echo $a; done
The first parameter to read, a, selects the first column, and if there is more, everything else will be put in b. As a result, you never need more variables than the number of your column +1.
So,
while read a b c d; do echo $c; done
will then output th...
Pass a data.frame column name to a function
...(x[,column])
}
fun1(df, "B", max)
Alternatively, using [[ also works for selecting a single column at a time:
df <- data.frame(A=1:10, B=2:11, C=3:12)
fun1 <- function(x, column){
max(x[[column]])
}
fun1(df, "B")
...
Segue to another storyboard?
...;
// Load the initial view controller from the storyboard.
// Set this by selecting 'Is Initial View Controller' on the appropriate view controller in the storyboard.
UIViewController *theInitialViewController = [secondStoryBoard instantiateInitialViewController];
//
// **OR**
//
// Load the view...
how to ignore namespaces with XPath
...
You can use the local-name() XPath function. Instead of selecting a node like
/path/to/x:somenode
you can select all nodes and filter for the one with the correct local name:
/path/to/*[local-name() = 'somenode']
...
RegEx: Grabbing values between quotation marks
... Please, why this works? I was using src="(.*)" but obviously it was selecting everything before the last ", your REGEX, though, selected only the src="" contents, but I didn't understand how?
– Lucas Bustamante
Jul 25 '18 at 23:25
...
Cannot open backup device. Operating System error 5
...
Go to the SQL server folder in start menu and click configuration tools
Select SQL Server configuration manager
On SQL server services, on the desired instance change the (Log On as) to local system
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Is it possible to download an old APK for my app from Google Play?
... releases => Production (Manage Production) => Release history => Select the version that you want => Click on Download button.
Your account should be granted with full permissions, otherwise the download button will be hidden.
Original Answer
Go to
Developer Console => Ma...
Bash history without line numbers
...ply vertical whitespace or indenting at paragraph breaks, depending on the selected style."
$ history | awk ' $1=""; {print}'
clear
echo "In word processing and desktop publishing, a hard return or paragraph break indicates a new paragraph, to be distinguished from the soft return at the end of a...
Sublime Text 2 keyboard shortcut to open file in specified browser (e.g. Chrome)
...nch Sublime Text and you should see a new Chrome option in the build list. Select it, and then you should be able to launch Chrome with Cmd+B on a Mac (or whatever hotkey you have configured for build, maybe its F7 or Ctrl+B on a Windows machine)
At least this should give you a push in the right di...
Algorithm to implement a word cloud like Wordle
...ou color and size words based on different weightings and it supports word selection (from a coordinate) and selected word highlighting. The source is yours to use as you see fit.
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